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| Parameter | INARNA6918-ZW-XL105 × 125 × mm | KOYORNA6918Needle roller bearings | IKORNA6918105 × 125 × 63 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | INA | KOYO | IKO |
| Designation | RNA6918-ZW-XL | RNA6918 | RNA6918 |
| Product family | — | Heavy-duty needle roller bearings / Metric series, caged, without inner ring | Machined Type Needle Roller Bearings |
| Detailed type | Radial roller bearing | Needle roller bearings | Needle roller bearings |
| Series | RNA6918 | — | RNA69 |
| Bore diameterd | 105 mm | — | 105 mm |
| Outside diameterD | 125 mm | 125 mm | 125 mm |
| WidthB | — | — | 63 mm |
| Basic dynamic load ratingC | 195 kN | 154 kN | 178 kN |
| Basic static load ratingC0 | 425 kN | 437 kN | 490 kN |
| Fatigue load limitPu | 76 kN | 66 kN | — |
| Reference speednref | 2700 r/min | — | 2400 r/min |
| Limiting speednG | 4400 r/min | 2600 r/min | 4000 r/min |
| Mass≈m | 1.257 kg | 1.5 kg | 1.360006 kg |
| Precision class | — | — | JIS, Class 0 |
| Cage | — | — | Steel |
| Bearing material | — | — | High Carbon Chrome Steel |
| Minimum operating temperatureTmin | -30 °C | — | -20 °C |
| Maximum operating temperatureTmax | 120 °C | — | 120 °C |
| Classification | |||
| Official Category Path | — | Needle roller bearings - Heavy-duty needle roller bearings - Metric series, caged, without inner ring | — |
| Official Classification 1 | — | Needle roller bearings / Heavy-duty needle roller bearings / Metric series, caged, without inner ring | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | 393562 | — | — |
| Official Class Key | — | 090-030-010 | — |
| Base Type | RNA6918 | — | — |
| Old Designation | ["RNA6918-ZW"] | — | — |
| Gpsd Group | I01 | — | — |
| Product Line Id | 09 | — | — |
| X Life Marking | XL | — | — |
| Cad Part Number | — | — | RNA6918 |
| Materials | |||
| Rolling Element Material | — | — | SUJ2 |
| Retainer Material | — | — | Steel |
| Product Identity | |||
| Short Description | Radial roller bearing | — | Machined Type Needle Roller Bearings |
| Long Description | — | — | Machined Type Needle Roller Bearings, High Carbon Steel, Oil Hole |
| Official Bearing Family | — | — | Needle Roller Bearings |
| Official Bearing Type | — | — | Machined Type Needle Roller Bearings |
| Construction | Needle roller bearings RNA, to DIN 617/ISO 1206 | — | — |
| Technical Data | |||
| Rolling Element | — | — | Roller |
| Relubricatable | — | — | Yes |
| Fw | — | 105 mm | — |
| D | — | 125 mm | — |
| C | — | 63 mm | — |
| R(Min.) | — | 1.1 mm | — |
| Basic Load Ratings : Cr | — | 154? kN | — |
| Basic Load Ratings : C0R | — | 437? kN | — |
| Under Roller Diameter (Fw) | 105 mm | — | — |
| Fatigue Load Limit : Cu | — | 66.0 kN | — |
| Outside Diamater (D) | 125 mm | — | — |
| Limiting Speeds(Grease Lub.) | — | 2600 min-1 | — |
| Basic Dynamic Load Rating, Radial (Cr) | 195,000 N | — | — |
| Limiting Speeds(Oil Lub.) | — | 4000 min-1 | — |
| Basic Static Load Rating, Radial (C0R) | 425,000 N | — | — |
| (Refer.)Mass | — | 1.500? kg | — |
| Operating Temperature Min. (Tmin) | -30 °C | — | — |
| Mass(Refer.) | — | 1.500? kg | — |
| Limiting Speed For Grease Lubrication (Ng Grea) | 2,650 1/min | — | — |
| Operating Temperature Max. (Tmax) | 120 °C | — | — |
| Limiting Speed (Limiting Spe) | 4,400 1/min | — | — |
| Reference Speed (Nϑr) | 2,700 1/min | — | — |
| Width, Outer Ring (C) | 63 mm | — | — |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | — | — |
| Fatigue Load Limit, Radial (Cur) | 76,000 N | — | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.